You can get a hand-held blender that you can stick inside the pan you're boiling the sauce in instead of transferring it to another container. I love this tool for soups and sauces such as yours.
Remember though that using a blender or food processor has a more smooth result. I've never had any accidents, but I:
- never fill the blender more than half
- always put my hand on the lid before turning it on
Do you have any pictures of the end result? Was it this bad?